Function extractAtMentionedFiles

src/utils/attachments.ts:2758–2791

(content: string)

// a feature-gated module so it doesn't leak into external builds.

export function extractAtMentionedFiles(content: string): string[] {
  // Extract filenames mentioned with @ symbol, including line range syntax: @file.txt#L10-20
  // Also supports quoted paths for files with spaces: @"my/file with spaces.txt"
  // Example: "foo bar @baz moo" would extract "baz"
  // Example: 'check @"my file.txt" please' would extract "my file.txt"

  // Two patterns: quoted paths and regular paths
  const quotedAtMentionRegex = /(^|\s)@"([^"]+)"/g
  const regularAtMentionRegex = /(^|\s)@([^\s]+)\b/g

  const quotedMatches: string[] = []
  const regularMatches: string[] = []

  // Extract quoted mentions first (skip agent mentions like @"code-reviewer (agent)")
  let match
  while ((match = quotedAtMentionRegex.exec(content)) !== null) {
    if (match[2] && !match[2].endsWith(' (agent)')) {
      quotedMatches.push(match[2]) // The content inside quotes
    }
  }

  // Extract regular mentions
  const regularMatchArray: string[] = content.match(regularAtMentionRegex) ?? []
  regularMatchArray.forEach(match => {
    const filename = match.slice(match.indexOf('@') + 1)
    // Don't include if it starts with a quote (already handled as quoted)
    if (!filename.startsWith('"')) {
      regularMatches.push(filename)
    }
  })

  // Combine and deduplicate
  return uniq([...quotedMatches, ...regularMatches])
}

export function extractMcpResourceMentions(content: string): string[] {
  // Extract MCP resources mentioned with @ symbol in format @server:uri